sig type direction = Encrypt|Decrypt and chaining_mode = ECB|CBC|CFBof int |OFBof int val aes :
?mode:Cryptokit.Cipher.chaining_mode ->
?pad:Cryptokit.Padding.scheme ->
?iv:string -> string ->Cryptokit.Cipher.direction ->Cryptokit.transform val des :
?mode:Cryptokit.Cipher.chaining_mode ->
?pad:Cryptokit.Padding.scheme ->
?iv:string -> string ->Cryptokit.Cipher.direction ->Cryptokit.transform val triple_des :
?mode:Cryptokit.Cipher.chaining_mode ->
?pad:Cryptokit.Padding.scheme ->
?iv:string -> string ->Cryptokit.Cipher.direction ->Cryptokit.transform val arcfour : string ->Cryptokit.Cipher.direction ->Cryptokit.transform